Gatling print to file if KO

Question

I have an .exec which for some values in my parameter list results in KO (value does not exists in the SUT). I further have the need to print these values to a file so I later can remove them from the parameter list in order to not get KO`s. I have a writer defined

 val writer = {
val fos = new java.io.FileOutputStream("testresultater.txt")
new java.io.PrintWriter(fos,true)

}

and wonder how I could do this just for KO s inside the .exec resulting in KO s for some values like this:

.exec(http("request_lagDokument")
        .post("/proxy/dokumenter/api/v1/SaveDokumentFil?IsDebug=true")
        .headers(headers_3)
        .body(ElFileBody("magnus/LagDokument.json"))
        .check(status.is(expected = 200))
        .check(jsonPath("$.DokumentGuid").saveAs("DokumentGuid")))


//if KO then:

    .exec((s: Session) => {
        writer.println(s.attributes("pnr"))
        s
    })

Is this possible?

Answer 1

You can do this by having a session function that is always executed with the conditional logic inside

.exec(session = {
  if (session.isFailed) {
    writer.println(s.attributes("pnr"))
  }
  session
})

or you can use the dsl's doIf

.doIf(session => session.isFailed) {
  exec(session => {
    writer.println(s.attributes("pnr"))
    session
  }
}